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Finding the Fourth Proportional to 223,879.80, 335,819.70 and 211,049.40

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Solution

The fourth proportional to 223,879.80, 335,819.70 and 211,049.40 is: 316,574.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,879.80 : 335,819.70 = 211,049.40 : x
  2. Step 2: Convert to fraction form
    223,879.80/335,819.70 = 211,049.40/x
  3. Step 3: Cross multiply
    223,879.80x = 335,819.70 × 211,049.40
  4. Step 4: Simplify right side
    223,879.80x = 70,874,546,193.18
  5. Step 5: Solve for x
    x = 70,874,546,193.18/223,879.80
  6. Step 6: Final answer
    x = 316,574.10

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.